he backed a law in arizona which some said was racial profiling. he called for a high-tech fence along the mexican border and struck a hard note talking about illegal immigrants. >> the answer is self deportation, people decide that they can do better work here because they don't have legal documentation. >> the campaign has put on a burst of speed, intensely targeting latinos, especially in swing states like colorado. the latest poll gives obama 70% of the hispanic vote. romney has backpedaled and the written policy with a much softer focus on illegal immigration. some say this is a chance to touch home the new message. >> throw away the rhetoric, the language that turns people off, and talk about it in a real leadership way. >> as night falls, the intense preparations are at an end. they will soon face each other for a debate but some say will shake up the race for the white house. >> so, how significant is tonight's debate? i am joined by the national editor of "a vanity fair" magazine. thank you very much. obviously, these debates have been ana